CN100358352C - Apparatus and method for video signal recording/reproducing - Google Patents
Apparatus and method for video signal recording/reproducingDownload PDFInfo
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- CN100358352C CN100358352CCNB2005100005025ACN200510000502ACN100358352CCN 100358352 CCN100358352 CCN 100358352CCN B2005100005025 ACNB2005100005025 ACN B2005100005025ACN 200510000502 ACN200510000502 ACN 200510000502ACN 100358352 CCN100358352 CCN 100358352C
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/78—Television signal recording using magnetic recording
- H04N5/781—Television signal recording using magnetic recording on disks or drums
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/79—Processing of colour television signals in connection with recording
- H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
- H04N9/804—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components
- H04N9/8042—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components involving data reduction
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- Television Signal Processing For Recording (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
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Abstract
Description
Technical field
The present invention relates to a kind of video signal recording/reproducing equipment, and relate more particularly to a kind of video signal recording/reproducing equipment, wherein, when record is carried out the compressed stream data that compressed encoding obtained by the TV signal that is received in to storage device, the compressed stream data that regeneration is write down, and the vision signal that output is regenerated, that is, and a kind of video signal recording/reproducing equipment that can carry out so-called time-shifting regeneration.
Background technology
Fig. 4 is the calcspar that shows a kind of configuration of known video signal recording/reproducing equipment.In this known video signal recording/reproducing equipment,system controller 101 is according to carrying out signal controlling by spectators from the operational order ofguidance panel 108 inputs, between two kinds of signals, switch, a kind of signal is to handle the receiving video signals that TV signal obtained that receives fromantenna 102 bytuner 103 anddemodulator 104, another kind of signal is by carrying out compressed encoding by 105 pairs of receiving video signals of MPEG1 encoder, with the compressed encoding signal record inhard disk drive 106, the signal of regenerative recording, and the regeneration vision signal that signal decoding obtained by 107 pairs of regeneration of MPEG1 decoder, shows signal on TV Monitor 109 thus then.In addition, about signal regeneration, according to operation from the spectators ofguidance panel 108,system controller 101 sends instruction and thinks the part of seeing in detail or skip its useless part with spectators in the program of regenerating lentamente, promptly carry out and so-calledly skip regeneration and (see for example Japanese Patent Laid-Open Publication No.8-138318, the 4th page, Fig. 1).
In video signal recording/reproducing equipment, need compressed encoding, signal record that the regular hour carries out receiving video signals to hard disk drive, from the decoding of hard disk drive regeneration and compress coding data.Therefore, even execution is regenerated forward fast or skipped regeneration, the vision signal of regeneration also can't be caught up with the receiving video signals that is just receiving fully.For this reason, even when having reached and be in close proximity to receiving video signals by regenerating forward fast or skipping vision signal that regeneration makes regeneration, what finish that spectators see up to the video image program also is the regeneration video image, unless spectators are switched the regeneration video image.Especially in analog broadcasting, the quality of compressed encoding regeneration vision signal is all far short of what is expected than receiving video signals aspect two of figure and sound qualities.Thereby spectators see having low-quality regeneration video image continuously.
Summary of the invention
Consider the problems referred to above, therefore one object of the present invention is to provide a kind of video signal recording/reproducing equipment and method, allow automatically or semi-automatically will to export the vision signal that switches to reception from the vision signal of regenerating when by regenerating forward fast and skipping regeneration when making that the regeneration vision signal reaches the vision signal that is in close proximity to reception.
For addressing the above problem the device that designs, as a kind of video signal recording/reproducing equipment, one of this choice of equipment ground output receiving video signals and regeneration vision signal, this regeneration vision signal is the receiving video signals that write down of regeneration and obtaining in the recorder vision signal, this equipment comprises switching judging parts, be used in output regeneration vision signal, check whether each receiving video signals and regeneration vision signal satisfy predetermined condition, if and satisfied predetermined condition, would then make and will be outputted to the judgement of receiving video signals.
In addition, as semiconductor integrated circuit, to its input receiving video signals, and when recording receiving video signals in the storage device, selectively export one of receiving video signals and regeneration vision signal, this regeneration vision signal is by acquisition that the data of reading from storage device are decoded, a kind of device is provided, this device comprises switching judging parts, be used in output regeneration vision signal, check whether each receiving video signals and regeneration vision signal satisfy predetermined condition, and if satisfy predetermined condition, then make and will be outputted to the judgement of receiving video signals.
Then, as a kind of method that is used for the recording/reproducing vision signal, wherein import a receiving video signals, and when recording receiving video signals in the storage device, selectively export one of receiving video signals and regeneration vision signal, this regeneration vision signal is to obtain by the data of reading from storage device are decoded, a kind of method is provided, this method comprises the switching judging step, in output regeneration vision signal, check whether each receiving video signals and regeneration vision signal satisfy predetermined condition, and if satisfy predetermined condition, then make and will be outputted to the judgement of receiving video signals.
According to equipment of the present invention, semiconductor integrated circuit and method, during output regeneration vision signal, when each receiving video signals satisfies predetermined condition with the regeneration vision signal,, make and to be outputted to the judgement of receiving video signals by switching judging parts or switching judging step.Then, according to this judgement, automatically or semi-automatically switch output and become possibility.
This video signal recording/reproducing evaluation method selecting optimal equipment comprises: the time information generating parts are used for generation time information with on the receiving video signals that is added to; Extract parts with temporal information, be used for extracting the temporal information that is added on the receiving video signals that is write down.Then, the switching judging component computes is by the time of time information generating parts generation with by the time difference between the time of temporal information extraction parts acquisition, the size of carrying out between this time difference and the predetermined value compares, if and this time difference be predetermined value or less than predetermined value, then make the judgement of switching output.
In addition, semiconductor integrated circuit preferably includes: the time information generating parts are used for generation time information with on the receiving video signals that is added to; Extract parts with temporal information, be used for extracting the temporal information that is added on the data of reading from storage device.Then, the switching judging component computes is by the time of time information generating parts generation with by the time difference between the time of temporal information extraction parts acquisition, the size of carrying out between this time difference and the predetermined value compares, if and this time difference be predetermined value or less than predetermined value, then make the judgement of switching output.
In addition, the video signal recording/reproducing method preferably includes: the time information generating step, and generation time information is with on the receiving video signals that is added to; With the temporal information extraction step, extract the temporal information on the data of reading from storage device that are added to.Then, in the switching judging step, calculating is by the time of time information generating step generation with by the time difference between the time of temporal information extraction step extraction, the size of carrying out this time difference and predetermined value compares, if and this time difference be predetermined value or less than predetermined value, then make the judgement of switching output.
According to the said equipment, semiconductor integrated circuit and method, during high rapid regeneration regeneration vision signal, when the time difference between regenerated signal and the receiving video signals becomes predetermined value or during less than predetermined value, makes and will be outputted to the judgement of receiving video signals.
Preferred video signal record/reclaim equiment comprises: the time information generating parts are used for generation time information with the receiving video signals that is added to; Can reduce the part exploring block, be used for surveying the reduced part of receiving video signals, and according to the temporal information that is produced by the time information generating parts, the temporal information of the beginning of the reduced part that record is surveyed and each of end; Temporal information is extracted parts, is used to extract the temporal information that is added on the receiving video signals that is write down; With can reduce the part identification component, be used for according to by reducing temporal information that the part exploring block write down and extracting the temporal information that parts extracted by temporal information, whether identification regeneration vision signal belongs to by reducing the reduced part that the part exploring block is surveyed.Then, if by reducing reduced part that the part exploring block surveyed and by reducing the reduced part coupling that the part identification component identifies, then the switching judging parts are made the judgement of switching output.
In addition, the preferred semiconductor integrated circuit comprises: can reduce the part exploring block, be used for surveying the reduced part of receiving video signals and the temporal information that basis is produced by the time information generating parts, the temporal information of the beginning of the reduced part that record is surveyed and each of end; Temporal information is extracted parts, is used to extract the temporal information that is added on the data of reading from storage device; Can reduce the part identification component, be used for according to by reducing temporal information that the part exploring block write down and extracting the temporal information that parts extracted by temporal information, whether identification regeneration vision signal belongs to by reducing the reduced part that the part exploring block is surveyed.Then, if by reducing reduced part that the part exploring block surveyed and by reducing the reduced part coupling that the part identification component identifies, then the switching judging parts are made the judgement of switching output.
In addition, the preferred video signal recording/reproducing method comprises: the time information generating step, and generation time information is with on the receiving video signals that is added to; Can reduce the part detection steps, survey the reduced part in the receiving video signals, and according to the temporal information that is produced by the time information generating step, the temporal information of the beginning of the reduced part that record is surveyed and each of end; The temporal information extraction step extracts the temporal information on the data of reading from storage device that are added to; Can reduce the part identification step, according to by reducing temporal information that the part detection steps write down and the temporal information of being extracted by the temporal information extraction step, whether identification regeneration vision signal belongs to by reducing the reduced part that the part detection steps is surveyed.Then, if by reducing reduced part that the part detection steps surveyed and by reducing the reduced part coupling that the part identification step identifies, then the switching judging parts are made the judgement of switching output.
According to above-mentioned equipment, semiconductor integrated circuit and method, when the regeneration vision signal of exporting reach can reduce the part and receiving video signals be also contained in can reduce the part in the time, make and will be outputted to the judgement of receiving video signals.
Preferred video signal record/reclaim equiment comprises: the time information generating parts are used for generation time information with the receiving video signals that is added to; Can reduce the part exploring block, be used for surveying the reduced part of receiving video signals, and according to the temporal information that is produced by the time information generating parts, the temporal information of the beginning of the reduced part that record is surveyed and each of end; Temporal information is extracted parts, is used to extract the temporal information that is added on the receiving video signals that is write down; With can reduce the part identification component, be used for according to by reducing temporal information that the part exploring block write down and extracting the temporal information that parts extracted by temporal information, whether identification regeneration vision signal belongs to by reducing the reduced part that the part exploring block is surveyed.Then, when the switching judging parts receive indication regeneration vision signal and belong to the recognition result that can reduce the reduced part that the part exploring block surveyed from reducing the part identification component, the switching judging component computes is by the time of time information generating parts generation with by the time difference between the time of temporal information extraction parts acquisition, size between time of implementation difference and the predetermined value relatively, if and the time difference be predetermined value or less than predetermined value, then make the judgement of switching output.
In addition, the preferred semiconductor integrated circuit comprises: the time information generating parts are used for generation time information with the receiving video signals that is added to; Can reduce the part exploring block, be used for surveying the reduced part of receiving video signals, and according to the temporal information that is produced by the time information generating parts, the temporal information of the beginning of the reduced part that record is surveyed and each of end; Temporal information is extracted parts, is used for extracting the temporal information that is added on the data of being read by storage device; Can reduce the part identification component, be used for according to reducing temporal information and the temporal information extraction temporal information that parts extracted that the part exploring block is write down, whether identification regeneration vision signal belongs to by reducing the reduced part that the part exploring block is surveyed.Then, when the switching judging parts receive indication regeneration vision signal and belong to by can reduce the recognition result of the reduced part that the part exploring block surveyed the time from reducing the part identification component, the switching judging component computes is by the time of time information generating parts generation with by the time difference between the time of temporal information extraction parts acquisition, size between time of implementation difference and the predetermined value relatively, if and the time difference be predetermined value or less than predetermined value, then make the judgement of switching output.
In addition, the preferred video signal recording/reproducing method comprises: the time information generating step, and generation time information is with on the receiving video signals that is added to; Can reduce the part detection steps, survey the reduced part in the receiving video signals, and according to the temporal information that is produced by the time information generating parts, the temporal information of the beginning of the reduced part that record is surveyed and each of end; The temporal information extraction step extracts the temporal information on the data of reading that are added to from storage device; Can reduce the part identification step, according to by reducing temporal information that the part detection steps write down and the temporal information of being extracted by the temporal information extraction step, whether identification regeneration vision signal belongs to by reducing the reduced part that the part detection steps is surveyed.Then, in the switching judging step, when determining that by reducing the part identification step regeneration vision signal belongs to by can reduce the reduced part that the part detection steps surveyed the time, time difference between the time that calculating is produced by the time information generating step and time of being extracted by the temporal information extraction step, size between time of implementation difference and the predetermined value relatively, if and the time difference be predetermined value or less than predetermined value, then make and carry out the judgement that output is switched.
According to the said equipment, semiconductor integrated circuit and method, when the regeneration vision signal of exporting reaches the time difference that can reduce between part and regeneration vision signal and receiving video signals when also being equal to or less than predetermined value, make and to be outputted to the judgement of receiving video signals.
Especially, can reduce part is the commercial video image.In addition, this can reduce part for wherein each image and sound are kept the part of preset time or longer time at certain state especially.
Preferred each video signal recording/reproducing equipment and semiconductor integrated circuit comprise: the output switching part, these parts are used for the judgement according to the switching judging parts, will export from the regeneration vision signal and switch to receiving video signals.
In addition, the preferred video signal recording/reproducing method comprises: the output switch step, and according to the judgement of switching judging step, will export from the regeneration vision signal and switch to receiving video signals.
According to the said equipment, semiconductor integrated circuit and method,, automatically will export from the regeneration vision signal and switch to receiving video signals according to the judgement that the output of having been done by switching judging parts or switching judging step is switched.
According to of the present invention, can realize following effect.When supposing that receiving video signals is compressed coding and is recorded in the storage device as compressed stream data, then export the regeneration vision signal that flow data obtained that writes down and compress by regeneration.In this case, because high rapid regeneration reaches when being in close proximity to receiving video signals, can automatically or semi-automatically output be switched to receiving video signals from the regeneration vision signal when the regeneration vision signal.Especially, in analog broadcasting, the regeneration vision signal is more far short of what is expected than receiving video signals aspect quality, and therefore, if will be outputted to receiving video signals at time point early, then spectators can cosily appreciate program.
Description of drawings
Fig. 1 is the block diagram that shows according to the configuration of the video signal recording/reproducing equipment of first embodiment of the invention;
Fig. 2 is the block diagram that shows according to the configuration of the video signal recording/reproducing equipment of second embodiment of the invention;
Fig. 3 is the block diagram that shows according to the configuration of the video signal recording/reproducing equipment of third embodiment of the invention;
Fig. 4 is the block diagram that shows the configuration of known video signal recording/reproducing equipment.
Embodiment
After this, with reference to the accompanying drawings, will describe into optimal mode of the present invention.
(first embodiment)
Fig. 1 is the configuration block diagram that shows according to the video signal recording/reproducing equipment of first embodiment of the invention.The video signal recording/reproducing equipment of this embodiment comprisestuner 11,demodulation parts 12, compressedencoding parts 13, timeinformation generating parts 14, thehard disk drive 15 as storage sets can reducepart exploring block 16,decoding parts 17, temporal information is extractedparts 18, can reducepart identification component 19, switchingjudging parts 20 andoutput switching part 21.
Timeinformation generating parts 14 generation time information are with on the modulated receiving video signals that is added to, and can be formed by the timer that is used for by the preset frequency Measuring Time.The time adjustment of timer can automatically be carried out based on the time signal of the scheduled time of transmitting on the TV signal, or can manually be carried out by the user.Note the step of the operation of timeinformation generating parts 14 corresponding to generation time information.
Can reducepart exploring block 16 receivingdemodulation parts 12 demodulated receiving video signals, and survey the reduced part in the receiving video signals.Can reducepart exploring block 16 and receive current time information from timeinformation generating parts 14, and survey can reduce part the time can reducingpart exploring block 16, each the temporal information that can reduce the beginning of part and end records in the hard disk drive 15.More particularly, use compressive flow with predetermined period as the unit, GOP (image sets) unit as by the mpeg encoded standard definition records temporal information in the hard disk drive 15.Attention can reduce the operation ofpart exploring block 16 corresponding to surveying the step that can reduce part.
For example, as treating, consider the commercial video image section and wherein image and sound keep the scheduled time or part for more time at a certain state by reducing the reduced part thatpart exploring block 16 is surveyed.Spectators do not wish to watch the commercial video image, and therefore shearing this commercial video image can not cause any specific question.Because receiving video signals switches to single language broadcasting from bilingual broadcasting, so can detect the commercial video image.In addition, based on the interval information during the silence period in the receiving video signals, can detect the commercial video image.And when business information was added on the TV signal ofunmodulated device 12 demodulation still, the commercial video image can detect from the TV signal without demodulation.In addition, even program does not comprise the commercial video image, wherein image and sound keep the part of the scheduled time also can be detected out as reducing part at a certain state.For example, comprising rest image and noiseless part can not provide any fresh information to spectators, and thereby, shear this rest image and can not cause any specific question.The detection of this part can be carried out by surveying such one-period, the fluctuation of sound signal level is enough little continuously in predetermined period in this cycle, and the undulate quantity of each pixel signal level difference sum is enough little during predetermined period in each frame period of picture signal.
In the above described manner, each receiving video signals and the temporal information that can reduce part are recorded on thehard disk drive 15.
On the other hand,decoding parts 17 are read compressed stream data fromhard disk drive 15, the compressed stream data of having read is carried out decoding as mpeg decode, and output comprise the regeneration vision signal of data image signal and digital audio signal.Read compressed stream data and writing compressed stream data and can carry out synchronously fromhard disk drive 15 by compressed encoding parts 13.That is, in reception and record video image content, the video image content of a time point record in the past of can reading and regenerate.
Decodingparts 17 continuously or discontinuously with than the speed of the fast twice of recording rate promptly with the speed of 2 * mbit/, read compressed stream data.When decodingparts 17 when reading compressed stream data continuously than the speed of the fast twice of recording rate, with and the same interval of receiving video signals and with the vision signal of regenerating than the speed output of the fast twice of conventional regeneration.Especially, in predetermined period, one of per two frames of the regeneration vision signal of regenerating in the conventional regeneration by sparse, makes the regeneration vision signal export with twice speed.On the other hand, when reading compressed stream data discontinuously, decodingparts 17 connect the compressed stream data of having read by its interbody spacer, and export the regeneration vision signal continuously.That is, compare, skip its partly outputting video signal with conventional regeneration.As a result, the regeneration vision signal is regenerated with two-forty.
Temporal information is extractedparts 18 and receive the flow data of reading fromhard disk drive 15, and extracts the temporal information that is superimposed upon on the compressed stream data.As described, by timeinformation generating parts 14 generation time information, and by compressed encodingparts 13 with on its compressed stream data that is added to.Note the step of the operation of temporalinformation extraction parts 18 corresponding to detection time information.
Can reducepart identification component 19 and receive the temporal information of being extracted by temporalinformation extraction parts 18, and be recorded in temporal information on thehard disk drive 15 with reference to reducingpart exploring block 16, discern the regeneration vision signal and whether belong to by reducing the reduced part thatpart exploring block 16 is surveyed.Especially, belong to and to reduce part if the time of extracting about the regeneration vision signal between the start and end time that can reduce part, then can reducepart exploring block 19 identification regeneration vision signals.Notice that the operation that can reducepart identification component 19 can reduce the step of part corresponding to identification.
Switchingjudging parts 20 receive by the information that can reduce the reduced part thatpart exploring block 16 surveyed, with by the information that can reduce the reduced part thatpart identification component 19 discerned, based on these information and executing logic determines, be that controloutput switching part 21 produces the video image switching signals, and output video image switching signal then.Especially, switchingjudging parts 20 are checked by reducing reduced part thatpart exploring block 16 surveyed whether with the same by reducing the reduced part thatpart identification component 19 discerned.Be no difference if judge them, then switchingjudging parts 20 output video image switching signals make vision signal to be exported switch to receiving video signals from the regeneration vision signal.The operation of noting switchingjudging parts 20 is switched the step that output is judged corresponding to making.
Example as the vision signal of switching by switchingjudging parts 20, wherein in the just received while of commercial video image, when the regeneration vision signal was regenerated forward fast and reached the commercial video image section forward fast, video image displayed automatically switched to the receiver, video image from the regeneration video image on the TV Monitor.In this case, cut away part commercial video image.Yet as mentioned above, the commercial video image is not that spectators want to see, and therefore, does not produce specific question.
Be input in theoutput switching part 21 bydemodulation parts 12 demodulated received vision signals with by the regeneration vision signal that decodingparts 17 are decoded, andoutput switching part 21 is selected one of video image of input according to the video image switching signal of being exported by switchingjudging parts 20, and then the signal of selecting is outputed to TV Monitor.The operation of notingoutput switching part 21 is switched the step that output is judged corresponding to making.
As described, according to present embodiment, by regenerating forward fast or skip regeneration, high rapid regeneration the regeneration vision signal.Then, when the reduced part of regeneration vision signal was caught up with the reduced part of receiving video signals, vision signal then to be exported can automatically switch to receiving video signals from the regeneration vision signal.
Note compressedencoding parts 13, timeinformation generating parts 14, can reducepart exploring block 16,decoding parts 17, temporalinformation extract parts 18, can reducepart identification component 19, switchingjudging parts 20 andoutput switching part 21 can be used as semiconductor integrated circuit and realize.
(second embodiment)
Fig. 2 is the configuration block diagram that shows according to the video signal recording/reproducing equipment of second embodiment of the invention.Can reducepart exploring block 16 and can reducepart identification component 19 by from the video signal recording/reproducing equipment of first embodiment, omitting, and to comprise switching judging parts 22, can obtain the configuration that the video signal recording/reproducing equipment of this example has.After this, will describe switching judging parts 22 in detail.
The temporal information to receiving video signals to be superimposed that switching judging parts 22 receive from timeinformation generating parts 14, and the temporal information of extractingparts 18 from temporal information for the extraction of regeneration vision signal, judge based on these temporal information actuating logics, be that controloutput switching part 21 produces the video image switching signals, and output video image switching signal then.Especially, switching judging parts 22 calculate from the time that timeinformation generating parts 14 obtain with from the time difference between the time that temporalinformation extraction parts 18 obtain, as the time difference between receiving video signals and the regeneration vision signal.Then, if should the time difference greater than predetermined value, output regeneration vision signal continuously then is and if this time difference is a predetermined value or less than predetermined value, then the output video image switching signal makes and switches to receiving video signals from the regeneration vision signal.
As the example of the vision signal of switching by switching judging parts 22, in the time of wherein after the opening entry receiving video signals was through 10 minutes, the regeneration of the vision signal that beginning is write down will be considered.A period of time after the regeneration beginning, the time of the time of receiving video signals and regeneration vision signal falls far short to each other.Therefore, spectators obtain being presented at the regeneration vision signal on the TV Monitor and appreciate it.At regeneration period, suppose that video image is as to spectators and the high rapid regeneration of nonessential commercial video image or by spectators' operation or automatically regenerate in some other mode.Then, when repeatedly repeating this high rapid regeneration etc., the time difference between regeneration vision signal and the receiving video signals reduces gradually.When the time difference becomes predetermined value or during less than predetermined value, the regeneration vision signal automatically switches to receiving video signals.
As described, according to present embodiment, by regenerating forward fast or skipping the regeneration vision signal of having regenerated.Then, when reaching very near the regeneration vision signal fast forward, vision signal to be exported can automatically switch to receiving video signals from the regeneration vision signal.In first embodiment, can reduce part unless each receiving video signals and reproduced picture signal belong to one, otherwise vision signal can not be switched automatically.On the contrary, according to present embodiment, no matter whether each receiving video signals and reproduced picture signal belong to one and can reduce part, and vision signal is all caught up with the moment that receives picture signal in the regeneration vision signal and switched.Therefore, output signal switches to receiving video signals in can be in than first embodiment shorter time.In addition, needn't provide and to reduce part exploring block and can reduce the part identification component.Therefore, the configuration of present embodiment is much simpler than first embodiment.
Notice that compressedencoding parts 13, timeinformation generating parts 14,decoding parts 17, temporalinformation extraction parts 18, switchingjudging parts 20 andoutput switching part 21 can be used as semiconductor integrated circuit and realize.
(the 3rd embodiment)
According to first embodiment, when regeneration vision signal and receiving video signals belonged to identical reduced part, output switched to receiving video signals from the regeneration vision signal.Therefore, the main body of program is not cut away.Yet, if even receiving video signals decline very minutely from commercial video image, output can not switched before next commercial video image.
On the other hand, according to second embodiment, in case the regeneration vision signal will be switched output very near receiving video signals.Yet, have this situation, wherein be outputted in certain other part rather than can reduce the part promptly in the middle of the program main body.This has run counter to wish that spectators want to appreciate the program main body and therefore optional.
Then,, will consider a kind of video signal recording/reproducing equipment, be used for when avoiding shearing the program main body as far as possible, and carry out output at time point early and switch as the third embodiment of the present invention.Fig. 3 is the configuration block diagram that shows according to the video signal recording/reproducing equipment of present embodiment.Add by video signal recording/reproducing equipment second embodiment first embodiment video signal recording/reproducing equipment reducedpart exploring block 16 and can reducepart identification component 19, obtain the configuration that the video signal recording/reproducing equipment of present embodiment has.After this, with the switchingjudging parts 23 in the video signal recording/reproducing equipment of detailed description present embodiment.
Whether the recognition result of switchingjudging parts 23 receptions can reductionpart identification component 19 and notified regeneration vision signal belong to can be reduced part.Normally, as in a second embodiment, switchingjudging parts 23 monitor that whether the time difference between regeneration vision signals and the receiving video signals is predetermined value or less than predetermined value.Even promising predetermined value or less than time difference of predetermined value can be reduced part unless the regeneration vision signal belongs to, otherwise also do not carried out the automatic switchover of vision signal.Thereby, Switch Video signal automatically not in the middle of the program.
In addition, when switchingjudging parts 23 reached the information that can reduce part from reducingpart identification component 19 reception regeneration vision signals, it was greater than reducing time span partly that switchingjudging parts 23 are set predetermined values.For example, suppose that predetermined value is defined as 10 seconds.When the regeneration vision signal reached 90 seconds commercial video images, it was 93 seconds that switchingjudging parts 23 are reseted predetermined value, and carried out switching judging.In this case, if receiving video signals surpasses the ending of commercial video image, for example 3 seconds or time still less, then the time difference between receiving video signals and the regeneration vision signal mostly is 93 seconds most, and be considered to reset predetermined value or less than the scope of reseting predetermined value within.Therefore, in this case, the Switch Video signal.
In the situation of above-mentioned example, in the video signal recording/reproducing equipment of first embodiment before next commercial video image, can not the Switch Video signal.On the contrary,, next commercial video image need not be waited for, vision signal receiving video signals can be switched to according to present embodiment.In this case, the body matter that finishes in back 3 seconds of commercial video image is cut off.Yet, with the situation of wherein cutting away the content in the middle of the program main body relatively, think that the amount of information that spectators lose is less.
As described, according to present embodiment, video signal can switch by more Zao time point in than first embodiment, and the shearing than second embodiment program body matter is still less arranged.
Attention is in the video signal recording/reproducing equipment of each the foregoing description, andoutput switching part 21 is automatically carried out the switching from the regeneration vision signal to receiving video signals.Yet video signal recording/reproducing equipment can form like this, switches so that semi-automatically carry out, that is, his own the reception from video signal recording/reproducing equipment of spectators instructed, and switches to receiving video signals from the regeneration vision signal.Oneself carry out under the situation about switching by him therein, for example from switching judgingparts
In addition, the condition of switching as output except above-mentioned these, can carry out output and switch under such condition, the bit rate of the vision signal of promptly regenerating is lower than predeterminated level, and the time difference between regeneration vision signal and the reception picture signal is less than the predetermined value that may adopt.That does like this reasons are as follows.If the bit rate of regeneration vision signal is low, think that reproduced picture is that a kind of still image or picture quality are inferior.In this case, it is more preferred to switch to receiving video signals.
In addition, can under such condition, carry out output and switch, promptly according to the generation bit quantity of the compressed encoding of receiving video signals less than predetermined value, and the time difference between regeneration vision signal and the receiving video signals is less than predetermined value.If each is relative few with the bit rate separately of decoding side in the coding side, suppose that then the data volume that is stored in the bit buffer unit is few relatively.Therefore, in this case, even when carrying out the output switching, think that the data volume of losing is also few relatively.
In addition, for example, if can survey spectators whether just in the face of TV Monitor, then when between regeneration vision signal and the receiving video signals time difference, spectators did not see TV Monitor less than predetermined value the time, can make the output switching that will carry out.In this case, cut away even the partial programme main body is output, spectators do not see video image, and therefore, do not have specific question yet.
In addition, the video signal recording/reproducing equipment of each the foregoing description can be applicable in each analog broadcasting and the digital broadcasting.
Allow from the automatic switchover of vision signal of regenerating according to video signal recording/reproducing equipment of the present invention to receiving video signals.Therefore, video signal recording/reproducing equipment of the present invention can be used as DVD recorder, HDD video tape recorder etc.In addition, video signal recording/reproducing equipment of the present invention can be used as the TV image capture board of computer equally.
Claims (24)
Translated fromChineseApplications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP004719/2004 | 2004-01-09 | ||
| JP2004004719AJP2005198203A (en) | 2004-01-09 | 2004-01-09 | Video signal recording / reproducing apparatus and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1638466A CN1638466A (en) | 2005-07-13 |
| CN100358352Ctrue CN100358352C (en) | 2007-12-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100005025AExpired - Fee RelatedCN100358352C (en) | 2004-01-09 | 2005-01-07 | Apparatus and method for video signal recording/reproducing |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20050152671A1 (en) |
| JP (1) | JP2005198203A (en) |
| CN (1) | CN100358352C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4428321B2 (en)* | 2005-09-07 | 2010-03-10 | ソニー株式会社 | Recording / reproducing apparatus, display control method, program |
| JP4589355B2 (en)* | 2007-03-30 | 2010-12-01 | 株式会社東芝 | Stream playback device |
| JP2009021885A (en)* | 2007-07-12 | 2009-01-29 | Panasonic Corp | Digital television broadcast recording / reproducing apparatus and reproducing method thereof |
| JP4618291B2 (en)* | 2007-11-30 | 2011-01-26 | ソニー株式会社 | Transmitting apparatus, receiving apparatus, and operation information transmitting method in receiving apparatus |
Citations (4)
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|---|---|---|---|---|
| DE4408131A1 (en)* | 1994-03-10 | 1995-07-06 | Otto Marchner | Auxiliary appts. built into TV receiver |
| CN1156942A (en)* | 1995-02-09 | 1997-08-13 | 松下电器产业株式会社 | Apparatus and method for recording and reproducing data |
| CN1227028A (en)* | 1997-04-25 | 1999-08-25 | 索尼公司 | TV receiver having recording/ reproducing functions and method of recording/reproducing TV signals |
| CN1288639A (en)* | 1998-01-07 | 2001-03-21 | 汤姆森许可公司 | Video signal processing method and apparatus |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4319286A (en)* | 1980-01-07 | 1982-03-09 | Muntz Electronics, Inc. | System for detecting fades in television signals to delete commercials from recorded television broadcasts |
| US6430363B2 (en)* | 1995-09-11 | 2002-08-06 | Matsushita Electric Industrial Co., Ltd. | Video signal recording and reproducing apparatus |
| AU5140200A (en)* | 1999-05-26 | 2000-12-18 | Enounce, Incorporated | Method and apparatus for controlling time-scale modification during multi-media broadcasts |
- 2004
- 2004-01-09JPJP2004004719Apatent/JP2005198203A/ennot_activeWithdrawn
- 2004-12-29USUS11/023,589patent/US20050152671A1/ennot_activeAbandoned
- 2005
- 2005-01-07CNCNB2005100005025Apatent/CN100358352C/ennot_activeExpired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4408131A1 (en)* | 1994-03-10 | 1995-07-06 | Otto Marchner | Auxiliary appts. built into TV receiver |
| CN1156942A (en)* | 1995-02-09 | 1997-08-13 | 松下电器产业株式会社 | Apparatus and method for recording and reproducing data |
| CN1227028A (en)* | 1997-04-25 | 1999-08-25 | 索尼公司 | TV receiver having recording/ reproducing functions and method of recording/reproducing TV signals |
| CN1288639A (en)* | 1998-01-07 | 2001-03-21 | 汤姆森许可公司 | Video signal processing method and apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1638466A (en) | 2005-07-13 |
| US20050152671A1 (en) | 2005-07-14 |
| JP2005198203A (en) | 2005-07-21 |
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